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DS1803 Datasheet(PDF) 1 Page - Dallas Semiconductor

Part No. DS1803
Description  Addressable Dual Digital Potentiometer
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1803 Datasheet(HTML) 1 Page - Dallas Semiconductor

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FEATURES
§ 3V or 5V Power Supplies
§ Ultra-low power consumption
§ Two digitally controlled, 256-position
potentiometers
§ 14-Pin TSSOP (173 mil) and 16-Pin SOIC
(150 mil) packaging available for surface
mount applications
§ Addressable using 3-Chip Select Inputs
§ Serial/Synchronous Bus Inputs
§ Operating Temperature Range:
-
Industrial: -40
°C to +85°C
§ Standard Resistance Values:
-
DS1803-010
10k
-
DS1803-050
50k
-
DS1803-100
100k
PIN ASSIGNMENT
PIN DESCRIPTION
L0, L1
- Low End of Resistor
H0, H1
- High End of Resistor
W0,W1
- Wiper terminal of Resistor
VCC
- 3V/5V Power Supply Input
A0..A2
- Chip Select Inputs
SDA
- Serial Data I/O
SCL
- Serial Clock Input
GND
- Ground
NC
- No connection
DESCRIPTION
The DS1803 Addressable Dual Digital Potentiometer is an addressable device having two independently
controlled potentiometers. Each potentiometer’s wiper can be set to one of 256 positions. Device control
is achieved via a 2-wire serial interface having a data I/O terminal and a clock input terminal. Device
addressing is provided through three chip select input terminals and correct communication protocol.
Addressing capability, when operating in a bus topology, allows up to eight devices to be controlled by
the serial interface. The exact wiper position of each potentiometer can be written or read. The DS1803
is available in a 16-pin DIP, 16-pin SOIC and 14-pin TSSOP package. The device is available in three
standard resistance values: 10k
Ω , 50kΩ, and 100kΩ , and is specified over the industrial temperature
range.
DS1803
Addressable Dual Digital Potentiometer
www.dalsemi.com
H1
1
14
VCC
L1
2
13
NC
W1
3
12
H0
A2
4
11
L0
A1
5
10
W0
A0
6
9
SDA
GND
7
8
SCL
DS1803 14-PIN TSSOP (173 MIL)
H1
1
16
VCC
NC
2
15
NC
L1
3
14
H0
W1
4
13
L0
A2
5
12
W0
A1
6
11
NC
A0
7
10
SDA
GND
8
9
SCL
DS1803Z 16-PIN SOIC (150 MIL)
DS1803 16-PIN DIP (300 MIL)
See mech. Drawings Section


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